All Research Papers Published In TREATISE ONLINE

Research Article
10.17161/to.vi.25213

Treatise Online no. 196: Part R, Revised, Volume 1, Evolutionary history of decapod groups: Brachyura (sections Dromiacea, Homoloida, Callichimaeroida, Torynommoida, Etyoida, Raninoida, Dakoticancroida, Cyclodorippoida)

Mar 03, 2026
Treatise Online
Carrie E Schweitzer + 2 more +2

Research Article
10.17161/to.vi.25066

Treatise Online no. 194: Part X, A dictionary of invertebrate paleontology: Letter Q

Jan 29, 2026
Treatise Online
Kristian P Saether + 3 more +3

Perforations are required in columns and purlins of a trussed building for making connections, for fixing electrical fixtures etc. An inves- tigation was undertaken to study the effect of perforations in cold-formed C and Z sections used as columns and purlins. For this purpose, finite element model was developed using ANSYS software. Six different shapes of perforations were considered to investigate the shape that gives maximum buckling load. The perforation pattern which is optimum for the individual section was applied to frames and then to the building and optimum type of perforation is suggested. Buckling loads of frames and building with and without perforation was done separately and results were compared. By considering perforations with equal area, linear buckling analysis was done and stress pattern around perforation was studied. Even though the area reduction was equal, differently shaped perforations gave different buckling load. In this case, stress concentration has an important role; buckling load is higher for the shape with least stress concentration.Â Â Â

Research Article
10.17161/to.vi.24794

Treatise Online no. 192: Part T, Revised, Volume 1, Paleoecology and functional morphology of unusual crinoids: stretching the limits of the crinoid Bauplan

Nov 13, 2025
Treatise Online
Przemysław Gorzelak + 2 more +2

Research Article
17
10.17161/to.vi.18111

Treatise Online no.162: Part B, Volume 2, Chapter 5: Microbially induced sedimentary structures (MISS)

May 28, 2022
Treatise Online
Nora Noffke + 10 more +10

Research Article
3
10.17161/to.vi.15848

Treatise Online no. 153: Part R, Revised, Volume 1, Chapter 8T16: Systematic descriptions: Superfamilies Trapezioidea and Xanthoidea

Sep 16, 2021
Treatise Online
Carrie E Schweitzer + 2 more +2

indistinct; orbits situated at anterolateral corner, large, entire, with prominent inner orbital corner with prominent lobe heterochelous, palm and fingers of

Research Article
1
10.17161/to.vi.15389

Treatise Online no. 149: Part F, Revised, Volume 2, Chapter 16: Systematic descriptions of the Scleractinia family Fungiacyathidae

Apr 15, 2021
Treatise Online
R C Baron-Szabo + 2 more +2

Research Article
10.17161/to.vi.15112

Treatise Online no. 144: Part F, Revised, Volume 2, Chapter 15: Systematic descriptions of the Scleractinia family Negoporitidae

Jan 21, 2021
Treatise Online
Rosemarie C Baron-Szabo

Research Article
10.17161/to.vi.14814

Treatise Online no. 141: Part R, Revised, Volume 1, Chapter 8T13: Systematic descriptions: Superfamily Trichodactyloidea

Nov 02, 2020
Treatise Online
Carrie E Schweitzer + 1 more +1

Research Article
2
10.17161/to.v0i0.8196

Treatise Online no. 111: Part M, Chapter 23C: Systematic Descriptions: Phragmoteuthida

Sep 25, 2018
Treatise Online
Dirk Fuchs + 1 more +1

Research Article
11
10.17161/to.v0i0.7414

Treatise Online no. 104: Part N, Volume 1, Chapter 26A: Introduction to the Hippuritida (rudists): Shell structure, anatomy, and evolution

Jan 22, 2018
Treatise Online
Peter Skelton